Suppress unknownMacro (#268)
Suppress unknownMacro (#268)

cppcheck creates an unknownMacro error when it cannot resolve a macro.
Since we don't pass in all dependent headers, we don't expect all macros to be discoverable by cppcheck.

Signed-off-by: Dan Rose <2591e5f46f28d303f9dc027d475a5c60d8dea17a@digilabs.io>
ament/ament_lint,ament/ament_lint,ament/ament_lint